JP2511895B2 - Indoor air purification system - Google Patents

Description

TECHNICAL FIELD The present invention relates to a room air cleaning system. More specifically, the present invention relates to a system that comprehensively evaluates a plurality of types of factors that affect pollution of indoor air, for example, state quantities such as carbon dioxide, humidity, and dust, and drives a purifying device based on this evaluation index.

[Background technology and its problems]

Recently, with the increase in airtightness of houses, the occurrence of dew condensation, mold, mites, etc., and allergic diseases caused by pollen, etc. are increasing. Therefore, the quality of indoor air has become a problem.

Generally, air pollutants include carbon dioxide, humidity,
Dust, odor, fungi, poisonous gas, etc. are considered, but air pollution factors in general rooms are carbon dioxide, humidity, dust,
Possible odor.

Conventionally, when configuring a system for cleaning indoor air, an instrument that detects the state quantity of a factor that affects the pollution of indoor air, such as an oxygen concentration meter, a hygrometer, a dust meter, etc., is installed in the room, It is conceivable to drive various purifying devices in conjunction with these. For example, the ventilator is activated when the value of the oximeter falls below the allowable limit. The dehumidifier is driven when the value of the hygrometer becomes higher than the allowable upper limit value, while the humidifier is driven when the value of the hygrometer becomes lower than the allowable lower limit value. Further, the air purifier is driven when the value of the dust meter becomes higher than the allowable limit.

In such a system, if the state quantities of all factors are within and near the allowable limits, none of the purification equipment is driven even though the cleanliness of the air that combines them is low, and eventually The air may be left in a low clean state.

Then, the allowable limit of each factor may be set to be narrow from the beginning, but this means that the purifying device is always operating, which is economically uneconomical.

[Object of the Invention]

An object of the present invention is to eliminate such a conventional defect, comprehensively evaluate the state quantities of a plurality of factors that affect the pollution of indoor air, and drive the purification equipment based on this evaluation index. Accordingly, it is an object of the present invention to provide an indoor air cleaning system that is economical and always maintains the cleanliness of the indoor air at a certain level or more.

[Means and Actions for Solving Problems]

In the present invention, among a plurality of factors that affect the pollution of indoor air, oxygen, humidity, a plurality of sensors for detecting the state quantity of dust, respectively, the ventilation device for improving the oxygen, humidity, the state quantity of dust, Purification equipment including a dehumidifier and an air purifier, and an arithmetic control device that drives the purification equipment according to the state quantities of each factor detected by each sensor, the arithmetic control device, in each of the sensors The difference between the detected state quantity and the standard value of each factor is obtained as the number of steps, and the number of steps is multiplied by the weighting factor for each factor to obtain the contamination frequency for each factor, and the sum of these contamination frequencies Is calculated from the reference value to obtain an indoor air evaluation index, and when the evaluation index obtained by this arithmetic means is less than or equal to a reference point, the number of steps from among the ventilation device, dehumidifier, and air purifier. And a control means for selecting and driving gas control device for improving the factors set value or more, characterized in that.

Therefore, when the evaluation index becomes equal to or lower than the reference point, the purifying device is driven and the state quantities of the factors of the indoor air are improved, so that the cleanliness of the indoor air can always be maintained at a certain level or higher. At that time, since the purification equipment was configured to include a ventilation device, a dehumidifier, and an air purifier that improve the state quantities of oxygen, humidity, and dust, it is possible to effectively improve the state quantities of oxygen, humidity, and dust. it can. Moreover, when driving these purification devices, the purification device that improves the factors in which the number of steps of each factor obtained in the calculation process of the evaluation index is greater than or equal to the set value is selected and driven. Since the device, the dehumidifier and the air purifier are not driven at once, it is economical from this point as well.

〔Example〕

An embodiment of the cleaning system according to the present invention will be described below with reference to the drawings. Usually, carbon pollutants, humidity, dust, and odor are considered as the air pollutants in the general room as described above, but since the increase of carbon dioxide is approximately proportional to the decrease of oxygen, it can be substituted for the measurement of oxygen amount. Further, since the source of odor in the general room is mainly due to human body or cigarette, it can be replaced by the amount of carbon dioxide and dust. In this embodiment, among a plurality of factors that affect the pollution of indoor air, oxygen, humidity, dust,
The indoor air evaluation index is obtained based on the three factors of dust due to cigarettes and other smoke, and the purification device is driven based on this evaluation index.

FIG. 1 shows an overall block diagram of this embodiment.
In the figure, 1A is an oxygen sensor, 1B is a humidity sensor, and 1C is a dust sensor. Since the smoke of cigarettes has a large specific gravity in the dust in the general room, it is preferable that the dust sensor 1C can detect it, for example, a miscellaneous gas sensor or CO
A sensor is available. The state quantity data of each factor detected by each of these sensors 1A to 1C is sequentially read into the arithmetic and control unit 2 at a predetermined timing.

The arithmetic and control unit 2 includes a memory (not shown) for storing constants and various numerical values given from the input unit 3, and executes the process shown in FIG. 3 according to a preset procedure. First, each data detected by each sensor 1A-1C and the standard value of each factor, here oxygen 21%, humidity 50%, dust 0mg / m ³
Is calculated as the number of steps and displayed on the display device 4. Then, the number of steps of each data is multiplied by the weighting factor of each factor to obtain the contamination frequency for each factor, and the sum of the contamination frequencies is subtracted from the reference value to obtain the evaluation index, which is displayed on the display device 4. To do. Finally, it is determined whether or not the evaluation index is below the reference point, and if it is not below the reference point, the process returns to the first process. On the other hand, if the evaluation index is equal to or less than the reference point, S _x , S _y , and S _z with the number of steps of 2 or more are read out, and the corresponding signals, that is, the ventilation command signal, the dehumidification or humidification command signal,
The purification command signal is output to the purification device 11 for a certain period of time.

As the purification device 11, at least a ventilation device 12 is provided, but if necessary, a dehumidifier 13, a humidifier 14, an air purifier 15
Is provided.

The display device 4 includes an oxygen data display 5 for displaying oxygen data, a humidity data display 6 for displaying humidity data, a dust data display 7 for displaying dust data, and an evaluation index for digitally displaying an evaluation index. A display device 8 is provided. The evaluation index display 8 indicates the cleanliness of air from 1 to
It can be displayed with an index of up to 10. For example, index 9
-10 means "comfortable", 8 means "appropriate", 7 means "somewhat bad", 6 means "poor", and 5 or less means "unsuitable".

As shown in FIG. 2 (A), the oxygen data indicator 5 displays 10
The light emitting diodes D _{1 to} D ₁₀ are arranged in a line,
Oxygen concentration of 21% or more to 19.65% or less can be displayed in 10 steps every 0.15%. That is, when the oxygen concentration is 21% or more, only the diode D ₁ is turned on, and when the oxygen concentration is 21%,
The diodes D _{2 to} D ₁₀ are sequentially turned on every 0.15% decrease. At this time, the diodes D _{1 to} D ₃ are green and the diode D _{4 is}
Since ~ D ₇ is colored in yellow and diodes D _{8 to} D ₁₀ are colored in red, it can be used as a reference for evaluation depending on the color range of the diode being lit.

Humidity data display 6 is displayed as shown in FIG.
The individual light emitting diodes D _{1 to} D ₁₀ are arranged in a line, and a range of humidity of 10% or less to 90% or more can be displayed in 10 steps every 10%. That is, at 50% humidity, the diode
D ₅ and D ₆ are turned on, and diodes D _{7 to} D ₁₀ are turned on every 10% increase in humidity with 50% as a reference, and diodes D _{4 to} D ₁ are turned on every 10% decrease in humidity. In this case, the diode
To D _5, D ₆ green point, diodes _{D 3, D 4, D 7} , D 8 is yellow,
Since the diodes D ₁ , D ₂ , D ₉ , and D ₁₀ are color-coded in red, respectively, this color-coding can be used as a reference for evaluation.

The dust data display 7 is set to 10 as shown in FIG. 2 (C).
A series of light emitting diodes D _{1 to} D ₁₀ arranged in a line,
Dust amount 0.05 mg / m ³ or less ~0.45mg / m ³ or less in the range 0.05 mg / m
Every ³ steps can be displayed in 10 steps. This means that only the diode D ₁ in the following quantity of dust 0.05 mg / m ³ is turned, the amount of dust 0.05 mg / m ³ diode D ₂ to D ₁₀ each increase is turned in order based on the 0 mg / m ^3. The colors of the diodes D _{1 to} D ₁₀ are the same as those of the humidity data indicator 5.

 Next, the operation of this embodiment will be described.

In the arithmetic and control unit 2, first, the oxygen data X detected by the oxygen sensor 1A is read, and the difference between the oxygen data X and the standard value (21%) is set in advance with a step width (0.15%).
Obtains the number of steps S _x divided by%), oxygen is displayed according to the number of steps S _x. That is, the diodes D _{2 to} D ₁₀ of the oxygen data display 5 are sequentially turned on for the number of steps S _x . Therefore, the diode D _{1 that} lights depending on the oxygen concentration
As the number of D ₁₀ is increased or decreased, the oxygen status can be confirmed by the length.

Next, the humidity data Y detected by the humidity sensor 1B is read, and the difference between the humidity data Y and the standard value (50%) is divided by a preset step width (10%) to obtain the number of steps S _Y , Humidity is displayed according to the number of steps S _Y. That is,
If + a number of steps S _Y, only diode D ₇ to D ₁₀ The number of the step number S _Y, the number of steps S _Y is - if, as many diode D ₄ to D ₁ of the step number S _Y Light up in order. Thus, humidity is higher if the diode D ₇ to D ₁₀ based on the 50%, the diode D ₄ to D ₁ is turned if low, to check the humidity state by the lighting direction and the number of diodes D ₁ to D ₁₀ You can

Next, read the dust data Z detected by the dust sensor 1C and divide the difference between the dust data Z and the standard value (0mg / m ³ ) by the step width (0.05mg / m ³ ) to obtain the number of steps S _z . Seeking,
Dust is displayed according to the number of steps S _z . In other words, the diode D ₂ ~ only dust Data Display 7 number of the step number S _z
Turn on D ₁₀ . Accordingly, the number of diodes D ₁ to D ₁₀ to be turned by the dust amount is increased or decreased, it is possible to check the dust state by its length.

Next, the evaluation index of the indoor air is obtained. This is done by multiplying the number of steps S _X , S _Y , and S _Z obtained by the above-mentioned process by the weighting factors A, B, and C for each factor to obtain the contamination frequency for each factor, and summing these contamination frequencies. Is subtracted from the reference value (10) to obtain the evaluation index. That is, the evaluation index is 10- (AS _X + | BS _Y | + CS _Z ). However, A; 1.5, B; 2, C; 1. Then, the obtained evaluation index is digitally displayed on the evaluation index display 8. Therefore,
The cleanliness of the room air can be grasped from the numerical value displayed on the evaluation index display 8.

Next, it is determined whether or not the evaluation index is a reference point, here 6 or less. If the evaluation index is not below the reference point,
Return to the reading process of oxygen data. On the other hand, if the evaluation index is less than or equal to the reference point, the number of steps is the set value, here 2
The above S _x , S _y , and S _z are read out, and the command signal corresponding thereto is output to the purification device 11 for a certain period of time. For example, if only S _X has the number of steps of 2 or more, the ventilation command signal is output to the ventilation device 12. If S _X and S _Y are two or more steps,
Dehumidifier while outputting a ventilation command signal to the ventilation device 12.
The dehumidification command signal or the humidification command signal is output to 13 or the humidifier 14. In this case, if S _y is +, dehumidification command signal, −
If so, it is a humidification command signal. Then, the ventilation device 12, the dehumidifier 13 or the humidifier 14, and the air purifier 15 are selectively driven by these command signals, so that the state quantities of the factors of the indoor air are automatically improved.

According to the present embodiment, the oxygen in the room air, the humidity and the amount of dust are respectively detected, the evaluation index is obtained by comprehensively evaluating these state quantities, and purification is performed when this evaluation index becomes equal to or lower than the reference point. Since the device 11 is driven, the cleanliness of the room air can be always maintained at a certain level or higher. Therefore, the comfort, health and safety of the people who live can be guaranteed.

Further, when driving the purifying device 11, since the step number of each factor obtained in the process of calculating the evaluation index is 2 or more is read out and the command signal corresponding thereto is output, that is, the ventilation device 12, Dehumidifier 13 or humidifier
14, because it does not drive the air purifier 15 at once,
It is economical from this point.

In addition, since the evaluation index is displayed as an index of 1 to 10, anyone such as an elderly person or a child can easily understand and handle it. At the same time, the oxygen, humidity, and dust amount are also indexed and displayed, which is useful for measures against dew condensation, maintenance and management of the house.

In the above embodiment, the indoor air evaluation index is obtained from the three factors of oxygen, humidity, and dust. However, if the evaluation index is obtained in addition to factors such as fungi and toxic gases, the quality of the air is improved. Can be evaluated accurately.

Further, in the above example, in determining the number of steps of each data, the oxygen step width was 0.15%, the humidity step width was 10%, and the dust step width was 0.05 mg / m ³ , but these step widths were set. May be arbitrarily determined. However, if it is extremely small, the display range will be narrowed due to the relationship with the display units 5, 6 and 7. On the contrary, if it is too large, it will not be possible to display the slight fluctuations in each data item. It is preferable.

Further, in displaying each data based on the number of these steps, in the above-mentioned embodiment, each is displayed in 10 steps, but it may be arbitrary as long as it can display the state quantity in a certain range required for this, as well. Not limited to visual, it may be expressed by sound.

Further, in obtaining the evaluation index from the number of steps of each data, the weighting factor of each data is not limited to the value in the above-mentioned example, and the degree of affecting the safety of the human body due to each factor and the discomfort given to a person. It may be appropriately determined in consideration. Further, the display of the evaluation index is not limited to 10 levels as in the above embodiment, and may be arbitrary, and may be expressed by sound without being limited to visual.

In driving the purifying device 11 based on the evaluation index, the purifying device 11 is driven under the condition that the evaluation index becomes the reference point 6 or less in the above embodiment. If the state quantity of any one of the factors exceeds the limit that impairs the safety of the human body or makes people uncomfortable, for example, exceeds the value specified by the Building Standards Act, the evaluation index will be below the reference point. Should be set.

Further, when the evaluation index becomes equal to or lower than the reference point, the device for improving the factor having the step number of 2 or more is driven in the above embodiment, but this is not limited to the step number of 2 or more, and is arbitrary. However, it is preferable to make the determination in consideration of the step width of each factor and the allowable limit of each factor.

〔The invention's effect〕

As described above, according to the present invention, the state quantities of a plurality of factors that affect the pollution of indoor air are comprehensively evaluated, and the purification device is driven based on this evaluation index.
The cleanliness of the indoor air can always be maintained above a certain level. At that time, since the purification equipment was configured to include a ventilation device, a dehumidifier, and an air purifier that improve the state quantities of oxygen, humidity, and dust, it is possible to effectively improve the state quantities of oxygen, humidity, and dust. it can. Moreover, when driving these purification devices, the purification device that improves the factors in which the number of steps of each factor obtained in the calculation process of the evaluation index is greater than or equal to the set value is selected and driven. It is economical because it does not drive the device, dehumidifier and air purifier at once. Regarding the present invention, IPC is “F24F11 / 02” and the keyword is “contamination”.
As a result of a so-called Patrice search, the "indoor air cleaning system" as in the present invention was not found,
The novelty of the present invention in the relevant field has been revealed.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a block diagram of the entire apparatus, FIG. 2 is a diagram showing each data display, and FIG.
The figure is a flow chart. 1A to 1C ... Sensor, 2 ... Arithmetic control device, 3 ... Input device, 4
Display device, 11 ... Purification device, 12 ... Ventilation device, 13 ... Dehumidifier, 14 ... Humidifier, 15 ... Air purifier.

Claims (1)

(57) [Claims] 1. A plurality of sensors for respectively detecting oxygen, humidity, and dust state quantities among a plurality of factors affecting indoor air pollution, and a ventilation device for improving the oxygen, humidity, and dust state quantities. A purifying device including a dehumidifier and an air purifier, and an arithmetic control device that drives the purifying device according to the state quantities of the factors detected by the sensors, the arithmetic control device including the sensors. The difference between the state quantity detected in step 1 and the standard value of each factor is obtained as the number of steps, and the number of steps is multiplied by the weighting factor for each factor to obtain the contamination frequency for each factor. Computation means for calculating the indoor air evaluation index by subtracting the sum from the reference value, and when the evaluation index obtained by this arithmetic means is below the reference point, the step from among the ventilation device, the dehumidifier and the air purifier. Cleaning system of the room air but including a control means for selecting and driving gas control device for improving the factors set value or more, characterized in that.